expdev.c

来自「numerical recipes in C source codes」· C语言 代码 · 共 14 行

#include <math.h>

float expdev(long *idum)
{
	float ran1(long *idum);
	float dum;

	do
		dum=ran1(idum);
	while (dum == 0.0);
	return -log(dum);
}
/* (C) Copr. 1986-92 Numerical Recipes Software "U,6VV'. */